From 378553619d95df11aecf67958c2017328f598816 Mon Sep 17 00:00:00 2001
From: Jordan Santell <jordan@subconscious.network>
Date: Mon, 10 Jul 2023 11:24:22 -0700
Subject: [PATCH] chore: Provide a script to generate headers that uses
 codegen_units=1 when building on macos to circumvent a header generation
 issue. Update CI and C makefile to use this script. Fixes #473

---
 .github/workflows/noosphere_apple_build.yaml |  4 +-
 c/example/Makefile                           | 14 +++---
 scripts/generate_headers                     | 27 ++++++++++
 scripts/xcode_local_build                    | 53 ++++++++++++++++++++
 4 files changed, 89 insertions(+), 9 deletions(-)
 create mode 100755 scripts/generate_headers
 create mode 100755 scripts/xcode_local_build

diff --git a/.github/workflows/noosphere_apple_build.yaml b/.github/workflows/noosphere_apple_build.yaml
index fe463bc48..cca561d0e 100644
--- a/.github/workflows/noosphere_apple_build.yaml
+++ b/.github/workflows/noosphere_apple_build.yaml
@@ -96,9 +96,7 @@ jobs:
           brew: protobuf cmake
       - name: 'Generate the header'
         run: |
-          cd rust/noosphere/include/noosphere
-          cargo run --example generate_header --features headers --locked
-          cd -
+	  scripts/generate_header
       - uses: actions/upload-artifact@v3
         with:
           name: include
diff --git a/c/example/Makefile b/c/example/Makefile
index 5bc3529f6..6c3509efa 100644
--- a/c/example/Makefile
+++ b/c/example/Makefile
@@ -1,13 +1,15 @@
 LIBNOOSPHERE := ../../target/debug/deps/libnoosphere.a
+HEADER := ../../target/headers/include/noosphere/noosphere.h
+INCLUDE_PATH := ../../target/headers/include/noosphere
 
-noosphere.h:
-	cargo run -p noosphere --example generate_header --features headers
+$(HEADER):
+	../../scripts/generate_headers
 $(LIBNOOSPHERE):
 	cargo build -p noosphere
-main.o: noosphere.h	
-	$(CC) -c main.c
+main.o: $(HEADER)
+	$(CC) -I$(INCLUDE_PATH) -c main.c
 main.out: main.o $(LIBNOOSPHERE)
-	$(CC) main.o $(LIBNOOSPHERE) -lm -o main.out
+	$(CC) $(LIBNOOSPHERE) -I$(INCLUDE_PATH) main.o -lm -o main.out
 
 .PHONY: build run clean
 
@@ -16,4 +18,4 @@ build: main.out
 run: main.out
 	./main.out
 clean:
-	rm -rf noosphere.h main.o main.out
+	rm -rf $(HEADER) main.o main.out
diff --git a/scripts/generate_headers b/scripts/generate_headers
new file mode 100755
index 000000000..0e8d81c13
--- /dev/null
+++ b/scripts/generate_headers
@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+set -e
+set -x
+
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+PROJECT_DIR="$SCRIPT_DIR/../"
+
+pushd $PROJECT_DIR
+
+rm -rf ./target/headers
+mkdir -p ./target/headers
+cp -r ./rust/noosphere/include ./target/headers/
+
+if [[ "$OSTYPE" == "darwin"* ]]; then
+	# macos linker fails to generate all exports without this flag
+	# https://github.com/subconsciousnetwork/noosphere/issues/473
+	CARGO_PROFILE_DEV_CODEGEN_UNITS=1 cargo run --verbose --package noosphere --example generate_header --features headers --locked
+else
+	cargo run --verbose --package noosphere --example generate_header --features headers --locked
+fi
+
+mv ./noosphere.h ./target/headers/include/noosphere/noosphere.h
+
+popd
+
+set +x
+set +e
diff --git a/scripts/xcode_local_build b/scripts/xcode_local_build
new file mode 100755
index 000000000..756513b93
--- /dev/null
+++ b/scripts/xcode_local_build
@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+set -e
+set -x
+
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+PROJECT_DIR="$SCRIPT_DIR/../"
+
+pushd $PROJECT_DIR
+
+rm -rf ./LibNoosphere.xcframework
+
+$SCRIPT_DIR/generate_headers
+
+TARGETS=(
+    "aarch64-apple-ios"
+    "x86_64-apple-ios"
+    "aarch64-apple-ios-sim"
+    "x86_64-apple-darwin"
+    "aarch64-apple-darwin"
+)
+
+for TARGET in "${TARGETS[@]}"; do
+    rustup target install $TARGET
+    cargo build --package noosphere --release --target $TARGET --locked
+    # cargo build --package noosphert buie --target $TARGET --locked
+done
+
+mkdir -p ./target/macos
+mkdir -p ./target/simulator
+
+lipo -create \
+    ./target/x86_64-apple-darwin/release/libnoosphere.a \
+    ./target/aarch64-apple-darwin/release/libnoosphere.a \
+    -output ./target/macos/libnoosphere.a
+
+lipo -create \
+    ./target/x86_64-apple-ios/release/libnoosphere.a \
+    ./target/aarch64-apple-ios-sim/release/libnoosphere.a \
+    -output ./target/simulator/libnoosphere.a
+
+xcodebuild -create-xcframework \
+    -library ./target/macos/libnoosphere.a \
+    -headers ./target/headers/include/ \
+    -library ./target/simulator/libnoosphere.a \
+    -headers ./target/headers/include/ \
+    -library ./target/aarch64-apple-ios/release/libnoosphere.a \
+    -headers ./target/headers/include/ \
+    -output ./LibNoosphere.xcframework
+
+popd
+
+set +x
+set +e